Phase 5 — 9 to 12 months

Pre-walker. Cognitive abilities explode. Language comprehension is far ahead of production (understands dozens of words, says 1-3). Imitation becomes the main learning tool.

Expected milestones (by end of 12 months)

• Stands with support; some take first steps
• Says 1-3 meaningful words
• Points to objects she wants or to show you (declarative gesture)
• Waves bye, blows kisses, plays imitation games
• Understands simple commands ("come here", "get the ball")
• Responds to "no"

Priority practices

• Pointing is critical. The declarative gesture (pointing to show you something) is one of the strongest predictors of language development and social cognition. Reinforce by always responding: "Yes! It's a bird!"^{Romeo et al. 2018}
• Dialogic reading begins for real. Use the PEER technique in books — Prompt (ask a question), Evaluate (assess the response), Expand (expand it), Repeat^{Whitehurst et al. 1988}. Studies show children receiving dialogic reading advance months in language development in just weeks.
• Intentional imitation. Do activities together. Babies learn dramatically more by imitation than by instruction.
• Don't push walking. Wheeled walkers delay autonomous walking. Stand-up push toys are safer alternatives.
• Limits start here. Say "no" with a firm but calm voice for real dangers. Redirect more than reprimand.
• Early symbolic play. "Feeding" a doll, pretending to drink tea. The start of abstract thought.